Comment on First mm always faulty?
NaibofTabr@infosec.pub 10 months ago
I can see that your printer is doing some nozzle priming lines on the side of the bed before it starts the actual print.
Does it retract after finishing the priming lines? It may be retracting too far/not recovering far enough before it starts the print moves, and depending on the slicer and printer firmware specifics, that function might not be controlled by normal retraction settings.
PixeIOrange@feddit.de 10 months ago
I changed every retraction setting ive found. 2x in PrusaSlicer, 1x on Klipper, nothing changes. But with Cura Slicer the problem is gone. So i obviously f*ed up some setting in PrusaSlicer. Will test more today.
NaibofTabr@infosec.pub 10 months ago
That is interesting. Does CuraSlicer do the same priming lines? Have you tried the print with PrusaSlicer without the priming lines?
If you can figure out what Cura is doing differently in that section of the gcode you could put those lines in the custom gcode box in PrusaSlicer and get the same results.
PixeIOrange@feddit.de 10 months ago
It does the same priming lines, im using the same start gcode. Without it would miss the complete first half of the gears outter wall, oftem from the 5 lines only 3 get printed.
NaibofTabr@infosec.pub 10 months ago
Right, ok, so I’m not particularly familiar with Cura… I use SuperSlicer which is a fork of Prusa (which is a fork of Slic3r). Neither slicer has a UI option for initial purge lines as far as I can tell.
So for both Prusa and Cura you are using a block of custom start gcode to define the purge lines? Exactly the same gcode in both slicers?
Could you please share the Cura gcode output in addition to the Prusa version you shared? I am curious what the difference is.
jtablerd@lemmy.world 10 months ago
Are you printing internal or external perimeters first?
PixeIOrange@feddit.de 10 months ago
In PrusaSlicer externals first, in cura outside to inside. Whats weird in cura, it prints the outter wall ls first half gears first, then the spokes from the second half.